An ex-boyfriend of Beckett returned this week, as Castle delivered a solid episode. It earned a 4.8 rating from our critic.

Did Castle and Beckett end up together? Yes, Castle and Beckett did end up together in the series finale of Castle. Their characters finally got together during Season 4 and tied the knot in Season 7.

So when Beckett and her team burst into a shadowy apartment on the trail of a murderer, the last thing they expect to see is the real-life Castle standing over a dead woman’s body holding a gun!

Episode 3 Under the Gun Mon, Oct 4, 2010 43 mins When a coded document hidden by a murdered bail bondsman gets Castle's imagination running wild, Beckett must steer the case back to the violent ...

When Beckett and her team burst into an apartment on a murderer's trail, they see Castle standing over a dead woman's body holding a gun; Beckett arrests Castle as he asserts his innocence.

Beckett and Castle still getting to know each other, and this creates one of the most iconic Castle moments: the shooting range scene. The chemistry between Caskett is off the charts in this episode.

From Castle to Beckett, we ranked every main character on Castle based on likability.